333 results about "Demulsifier" patented technology

The invention discloses a low-temperature polyether demulsifier for oil and gas gathering and transportation and a preparation method thereof, and relates to the technical field of petrochemical engineering, and the preparation method is characterized by comprising the following steps: compounding cardanol, pentaethylenehexamine and bisphenol F according to a specific molar ratio to obtain an initiator, and carrying out formaldehyde condensation to prepare a composite initiator; epoxypropane and ethylene oxide are grafted through staged block copolymerization to form a polyether skeleton; introducing a fluorine-containing epoxy monomer to carry out terminal fluorination modification; finally, adipic acid and epichlorohydrin are subjected to chain extension crosslinking, and the demulsifier with the molecular weight being 8000-12000 Da, the fluorine content being 5.5-6.5 wt% and the PDI being smaller than or equal to 1.3 is prepared. The low-temperature demulsifying agent has the effects of realizing efficient demulsification at low temperature, improving the demulsifying efficiency and reducing the dosage through coordination of the composite initiator, super-hydrophobic permeation of the fluorinated block and accurate regulation and control of the molecular weight, solving the problems of low-temperature failure and easiness in emulsification of a traditional demulsifying agent, and meeting the requirements of low-temperature working conditions of oil and gas gathering and transportation.

The invention relates to the technical field of water treatment, and discloses a silicon powder conditioner and a preparation method thereof, the silicon powder conditioner comprises 20-40% of an inorganic coagulant, 5-15% of an organic polymer coagulant, 3-10% of a natural polymer coagulant aid, 10-25% of a demulsifier, 2-8% of a synthetic coagulant aid, and the balance of water. The demulsifying agent is compounded with various coagulants and coagulant aids, the demulsifying agent preferentially destroys an oil-water interfacial film, releases wrapped silicon powder and eliminates the'colloid protection 'effect of oil stains on the surface of the silicon powder, and the inorganic and organic coagulants rapidly perform electrical neutralization and adsorption bridging on exposed silicon powder particles to form floc which is good in settling performance and easy to filter. Meanwhile, the inorganic coagulant provides positive charges and efficiently neutralizes the microfine silicon powder with negative charges; cPAM with high molecular weight and PDADMAC with strong cations form long-chain bridging and patching effects, so that fine particles with the particle size of 1-5 microns are specially captured, and meanwhile, larger-particle silicon powder is improved to form floc which is easy to filter; the natural polymer further increases the volume and density of the floc, and prevents the floc from being broken under shearing.

The invention provides an integrated medical waste liquid advanced treatment device which comprises a treatment tank body, a separation cylinder and an interception filter plate at the lower end are arranged in the treatment tank body, the top of the separation cylinder is connected with a water inlet pipe, a rotating shaft driven by a first motor is arranged in the middle of the separation cylinder, and a spiral net plate is arranged on the shaft. An assembly for adding a demulsifier through a rotating shaft is arranged at the bottom of the tank, and an ultraviolet ozone co-processing assembly is arranged above the interception filter plate. A biological carrier column is contained in the reaction cylinder, a uniform water distributor is arranged at the bottom, and a top sealing cover is connected with a water outlet pipe through a connecting pipe. And the aeration water delivery assembly delivers the water treated by the ultraviolet ozone to the water distributor, so that the multi-stage advanced treatment of the waste liquid is realized. Through efficient multi-stage treatment technologies such as solid-liquid separation, demulsification, ultraviolet ozone oxidation and biodegradation, comprehensive purification of complex medical waste liquid is achieved, and the device has the advantages of being high in treatment efficiency, high in automation degree and remarkable in environmental protection effect.

The invention belongs to the technical field of hydraulic oil preparation, and particularly relates to anti-wear hydraulic oil and a production process thereof. The anti-wear hydraulic oil is prepared from the following raw materials in percentage by mass: 2 to 2.2 percent of an anti-wear complexing agent, 0.002 to 0.003 percent of a demulsifying agent, 0.001 to 0.0015 percent of an anti-foaming agent, 0.03 to 0.04 percent of an anti-rust agent, 0.1 to 0.3 percent of a pour point depressant, 0.3 to 0.5 percent of a dispersing agent and the balance of base oil. According to the anti-wear hydraulic oil disclosed by the invention, a mixture of 500N II type base oil, 100N III type base oil, CTL 4 base oil and trimethylolpropane trioleate is used as base oil, and an anti-wear complexing agent, a demulsifier, an anti-foaming agent, an anti-rust agent, a pour point depressant and a dispersing agent are added into the base oil; the prepared anti-wear hydraulic oil is ensured to have excellent extreme pressure property, thermal oxidation stability and wear resistance.

A hyperbranched polymer and a preparation method therefor and the use thereof. The hyperbranched polymer comprises a structural formula of formula 1, wherein R is selected from a substituted or unsubstituted C12-C18 alkyl. The hyperbranched polymer, which is used as a demulsifier for demulsifying crude oil emulsions, exhibits a high demulsification efficiency, a low usage amount, a low demulsification temperature, a high acid and alkali resistance, and a high salt resistance. The demulsifier has a high demulsification performance in oil-water emulsions with various properties.

The invention relates to the technical field of industrial wastewater treatment, and discloses a treatment method for grinding fluid wastewater of a grinder, which comprises the following steps: pretreatment and demulsification, multi-stage chemical purification, biochemical deep treatment, deep purification and recycling, and sludge treatment. A specific supported heterogeneous catalyst is adopted in the multi-stage chemical purification step, nano zero-valent iron and copper oxide composite active components constructed on the surface of the catalyst can enhance the generation efficiency and stability of free radicals in the advanced oxidation process, and a composite coagulant with an optimized ratio in the coagulating sedimentation step is cooperated, so that the purification efficiency of the high-grade oxidation process is improved. An efficient continuous removal system for heavy metal ions and refractory organic pollutants is formed; meanwhile, in the pretreatment step, the demulsifier is composed of specific components, through the synergistic effect of all the components, rapid demulsification of the emulsified oil phase in the grinding fluid wastewater is achieved, favorable conditions are created for subsequent deep treatment, and therefore the purification efficiency and operation stability of the technology are overall improved.

The invention discloses a method for simulating settlement change of water-containing emulsified crude oil of an offshore platform. The method comprises the following steps: establishing other substance components except crude oil according to related physical property parameters of the crude oil extracted from the offshore platform; according to test data of crude oil extracted from the offshore platform, oil cutting is conducted on the crude oil composition, and crude oil virtual components are generated; according to the water content test data of the extracted crude oil, virtual components used for representing the emulsion in the water-containing crude oil are established; according to related equipment parameters of an offshore platform oil treatment separator, a water-containing emulsified crude oil settlement change model of the separator is constructed; values are taken according to related production data of the oil treatment separator and according to a time sequence; according to the change model and the time sequence values of the related parameters, coupling a regression equation of the demulsifier concentration to the water content of the settled water-containing emulsified crude oil; and solving the change model by adopting a simultaneous solution method. According to the simulation method, the reliability and effectiveness of separator moisture content analysis are improved.

The invention discloses a multistage separation method of oil in dimethyl dichlorosilane hydrolysis byproduct acid, which is used for removing organic oil impurities in dimethyl dichlorosilane hydrolysis byproduct hydrochloric acid, and comprises the following steps: S1, static pre-separation: introducing the dimethyl dichlorosilane hydrolysis byproduct hydrochloric acid to be treated into a static settling tank; most easily separated oil drops in the byproduct hydrochloric acid are removed; s2, introducing the byproduct hydrochloric acid treated in the step S1 into a high-shear device, adding a polymer demulsifier, and stirring to promote oil drop coalescence; s3, deeply filtering the demulsified acid liquor by adopting a strong acid-resistant, temperature-resistant and anti-pollution ceramic membrane, and intercepting fine oil drops; and S4, introducing the byproduct hydrochloric acid filtered in the S3 into an activated carbon adsorption column, and adsorbing residual trace soluble organic matters and pigments. Compared with the prior art, the multi-stage separation method for the oil in the dimethyl dichlorosilane hydrolysis byproduct acid has the advantages of being convenient to operate and use, efficient, low in cost and environmentally friendly.

The present application belongs to the technical field of electric field separation device, and particularly relates to an electric field enhanced oil-water separation equipment, which comprises a separation cylinder, a liquid inlet pipe communicated with the middle of one side of the separation cylinder, a drain pipe communicated with the bottom of the other side of the separation cylinder, a sealing part detachably connected to the top of the separation cylinder, an electrolytic stirring assembly arranged in the middle of the sealing part and arranged in the separation cylinder, a floating scum separation assembly arranged on the upper part of the inner side of the separation cylinder, an exhaust part installed on the sealing part and having an air inlet end communicated with the inside of the separation cylinder, a feeding part installed on the sealing part and having a material outlet end communicated with the inside of the separation cylinder, and a blowdown part coaxially fixed to the bottom of the separation cylinder and having a material inlet end communicated with the inside of the separation cylinder. The electrolytic stirring assembly is arranged to split the oil liquid into small oil droplets, and the demulsifier is mixed with the oily sewage more uniformly, so that the demulsification effect is improved, the generation of flocculation is improved, and the oil-water separation efficiency is improved.

The utility model belongs to the technical field of electro-desalting, and particularly relates to a heavy crude oil electro-desalting device. Comprising a crude oil heat exchanger before removal, a first electric desalting tank, a second electric desalting tank, a third electric desalting tank, a crude oil heat exchanger after removal and a flash tower which are connected in sequence, and further comprises a fourth electric desalting tank and a fifth electric desalting tank which are connected with the first electric desalting tank and the second electric desalting tank in parallel, inlets of the first electric desalting tank, the second electric desalting tank, the third electric desalting tank, the fourth electric desalting tank and the fifth electric desalting tank are provided with water injection pipelines, the inlets of the first electric desalting tank and the fourth electric desalting tank are also provided with crude oil flow regulating valves, and an inlet pipeline of the crude oil heat exchanger before desalting is connected with a demulsifying agent pipeline. Through the multi-stage electric desalting treatment and intelligent response control technology, the desalting efficiency is remarkably improved, the energy consumption is reduced, the service life of equipment is prolonged, the operation process is simplified, the adaptability of the device is enhanced, and efficient, energy-saving, durable and easy-to-operate crude oil desalting treatment is realized.

The invention relates to a biodegradable hydraulic oil composition and a preparation method of hydraulic oil, and relates to the technical field of hydraulic oil compositions.The hydraulic oil composition comprises, by weight, 20-37% of ester oil, 5-10% of refined vegetable oil and 5-10% of a demulsifier, and the total weight of the ester oil, the refined vegetable oil and the demulsifier is 100%. The content of the refined vegetable oil is 62-79.9 wt%, the content of the demulsifier is 0.1-1 wt%, and the preparation method of the refined vegetable oil comprises the following steps: pre-loading a nanocapsule with an antioxidant as an inner core in activated clay, loading the activated clay pre-loaded with the nanocapsule into deacidified oil, and filtering to obtain the refined vegetable oil. The hydraulic oil composition disclosed by the invention has excellent biodegradability and also has the technical effects of relatively good oxidation stability and viscosity-temperature property.

The invention discloses an energy-saving kitchen solid residue treatment system and process, the energy-saving kitchen solid residue treatment system comprises a hydrothermal reactor, a flash evaporation reactor, a material buffer tank, a filter press, a demulsifier, an oil-water separator, an MVR evaporator, a drying machine, a mixing granulator and a heat pump recovery system, the flash evaporation reactor is communicated with the hydrothermal reactor, the material buffer tank is communicated with the flash evaporation reactor, and the material buffer tank is communicated with the filter press. The filter press is communicated with the material buffer tank, the demulsifier is communicated with the material buffer tank, the oil-water separator is communicated with the demulsifier, the MVR evaporator is communicated with the oil-water separator and the filter press, the drying machine is communicated with the filter press and the MVR evaporator, and the mixing granulator is communicated with the drying machine and the oil-water separator. The heat pump recovery system is communicated with the hydrothermal reactor, the flash evaporation reactor, the MVR evaporator and the drying machine. The conveying efficiency can be improved, the dewatering efficiency can be improved, the filter cloth is easier to clean, the drying efficiency is improved, the energy consumption required by drying is reduced, and pollution emission and resource waste are reduced.

This invention discloses a demulsifier for polymer flooding crude oil produced fluids, its preparation method, and its application, belonging to the field of chemical additives for petrochemicals. The technical solution includes a main agent, an auxiliary agent, a penetrant, and water; the main agent is a polyene-polyamine block polyether, the auxiliary agent is a triethanolamine block polyether quaternary ammonium salt, and the penetrant is selected from at least one of methanol, ethanol, ethylene glycol, and diethylene glycol butyl ether; in the demulsifier, the ratio of the main agent to the auxiliary agent is 4-9:1, the amount of penetrant is 30% of the total amount of the main agent and auxiliary agent, and the amount of water is 70% of the total amount of the main agent and auxiliary agent. This invention, applied to demulsification of polymer flooding crude oil produced fluids, features high demulsification efficiency and rapid demulsification effect.

The application provides an absorption liquid for absorbing asphalt fume and oil mist waste gas, a preparation method and application, and relates to the field of waste gas treatment. The absorption liquid is prepared from the following raw materials in mass percentage: polyethylene glycol dimethyl ether 60-80%; demulsifier 5-15%; dispersion polymerization inhibitor 3-10%; oxidant carrier 1-3%; slow-release particles 2-9%; cosolvent 5-12%; and defoaming agent 0.1-1%. In the application, the anti-adhesion and polymerization resistance performance are improved through the compounding of various solvents, the continuous operation cycle of the equipment is prolonged to more than 90 days, the pressure difference of the filler is increased by less than 5%, and the frequent shutdown problem caused by asphalt fouling in the traditional technology is completely solved; meanwhile, the demulsification is efficient, the removal rate is high, and another possibility is provided for efficient, green and economic deep treatment of waste gas.

The application discloses a reverse demulsifier composition and relates to the technical field of oil and gas field development. The reverse demulsifier composition comprises 1-4 parts of castor oil and 3-8 parts of cationic polyether in terms of weight parts. The cationic polyether is prepared from a mass ratio of 1:20-80:10-40 of a starter, ethylene oxide and propylene oxide. The starter is prepared by addition reaction of a first monomer and a second monomer. The first monomer is one of polyethylene polyamine or aliphatic diamine. The second monomer is quaternary ammonium salt containing one olefinic bond or epoxy quaternary ammonium salt. The molar ratio of the first monomer to the second monomer is 1:0.2m-0.7m, and m is the number of active hydrogen in the first monomer. The reverse demulsifier composition has good demulsification effect and fast demulsification speed.

The invention relates to the technical field of emulsion separation, and discloses a layered oil-water separation device suitable for emulsion, which comprises a support base, a deceleration base arranged on the top of the support base, a driving source arranged on one side of the deceleration base, a separation cylinder arranged on the top of the deceleration base, and a cover plate arranged on the top of the separation cylinder, an extraction opening is formed in the cover plate, a pull-away pipe is arranged in the extraction opening, a pull-away pipe is arranged on one side of the bottom of the speed reduction base, a filling opening is further formed in the separation barrel, an emulsion and a demulsifier can be added into the filling opening, and a mixing assembly is arranged in the separation barrel; an adjusting assembly is arranged on the inner wall of the separating cylinder; the mixing assembly is used for uniformly mixing the emulsion and the demulsifier in the separation cylinder; the adjusting assembly is used for automatically adjusting the suction height of the extraction opening according to the liquid level height in the separation barrel. Compared with the prior art, the extraction opening is always located at the optimal position of the oil layer, and the oil-water mixed extraction phenomenon caused by liquid level fluctuation of a traditional device is avoided.

The application provides an oil-containing wastewater treatment equipment and method based on low-temperature evaporation, and belongs to the technical field of wastewater treatment. The equipment comprises, which are arranged in series, a demulsifier reaction tank, a polyaluminum chloride reaction tank and a polyacrylamide reaction tank, and oil-containing wastewater flows through the three reaction tanks to realize continuous and staged flocculation; a filter pressing device is communicated with a discharge port of the polyacrylamide reaction tank, and is internally provided with an arc-shaped filter residue assembly, a rotary residue scraping assembly and a filter pressing cleaning assembly, and the three assemblies are cooperated to form integrated operations of filtering, salvaging, filter pressing and cleaning; and a low-temperature evaporation machine is connected to a liquid outlet end of the filter pressing device. The application realizes continuous demulsification and flocculation treatment through the multi-tank series connection, and batch waiting is not needed; the filter pressing device automatically cleans flocculation materials while filter pressing, so that blockage is avoided and manual cleaning is not needed during shutdown. The overall process is closely connected, and the degree of automation is high, so that the oil-containing wastewater treatment efficiency and continuous production capacity are significantly improved, and the water quality after treatment can reach the recycling standard.

The invention relates to a method for improving the dewatering performance of organic sludge by using a polyether demulsifier, and belongs to the technical field of municipal sludge treatment. The epoxyethane / epoxypropane block polyether is utilized to effectively destroy a stable oil-water emulsification system in the organic sludge, reduce interfacial tension and promote water release, and the dehydration performance of the organic sludge is remarkably improved by destroying an oil-water interfacial film structure. By utilizing the method disclosed by the invention, the dehydration efficiency of the organic sludge can be remarkably improved, the capillary water absorption time of the sludge and the specific resistance of the sludge are remarkably reduced, the Zeta potential of the sludge becomes closer to a positive value, the median particle size of the sludge is remarkably improved, and the water content of a sludge cake is greatly reduced; the method is easy and convenient to operate, existing dehydration equipment can be directly utilized, and extra investment is not needed; the adding proportion of the demulsifier can be optimized according to actual sludge characteristics, so that the medicament cost is saved; the method provided by the invention provides an economic and efficient technical scheme for organic sludge treatment and disposal, and sludge reduction and recycling can be promoted.

The invention discloses a preparation method for blending finished fan oil by using regenerated fan oil, which comprises the following steps: (1) adding 40-85 parts by weight of regenerated fan oil, 10-40 parts by weight of mPAO synthetic base oil and 5-15 parts by weight of solubilizer into a blending tank, heating to 55-65 DEG C, and uniformly stirring and mixing; (2) adding 40-4000 ppm of a defoaming agent into the blending tank in the step (1), and uniformly stirring and mixing at 55-65 DEG C; (3) adding 2-3 parts of a composite additive into the blending tank in the step (2), and uniformly stirring and mixing at 45-55 DEG C; (4) adding 40-150ppm of a demulsifier into the blending tank in the step (3), and uniformly stirring and mixing at 45-55 DEG C to obtain primary blend oil; and (5) filtering the primary blend oil obtained in the step (4) to obtain the finished fan oil. The high-quality fan gear box lubricating oil is successfully prepared, the finished fan oil can effectively reduce the cost, meanwhile, the performance requirement of the fan oil can be met, the quality of the fan oil is equivalent to that of commercial fan new oil, and the market application value is high.

The invention relates to the technical field of oil-gas field development, and particularly discloses a fracturing flow-back fluid oil-water separation method based on a centrifugal down-flow same-term capture technology. Comprising the following steps: S1, pretreatment: filtering the fracturing flow-back fluid to remove large-particle-size suspended solids contained in the fracturing flow-back fluid so as to obtain a pretreatment fluid; s2, demulsification: adding a demulsifier into the pretreatment solution obtained in S1, and stirring and mixing to obtain a demulsification solution; s3, air flotation separation; s4, performing centrifugal downstream same-term capturing; s5, collecting an oil phase; s6, water phase purification; and S7, recovering and circulating the medicament. The oil-water separation method for the fracturing flow-back fluid can be used for treating the fracturing flow-back fluid with the high emulsification degree generated in the exploitation process of unconventional oil and gas resources such as shale gas and tight oil and gas, and has the advantages of being high in separation efficiency, low in oil content of effluent, high in system adaptability, controllable in comprehensive operation cost and environmentally friendly.

The invention discloses a real-time monitoring and feedback regulation and control device for oilfield sewage treatment, and belongs to the technical field of sewage treatment. The device comprises a monitoring unit used for collecting multiple water quality parameters and process operation parameters in the oilfield sewage treatment process in real time; the regulation and control unit comprises a medicament adding module, a stirring regulation and control module, a filtering regulation and control module and a water outlet valve control module which are respectively used for adding a demulsifying agent, a flocculating agent and a corrosion inhibitor, regulating stirring parameters, controlling start and stop of a filtering assembly, backwashing and regulating the water outlet flow; the control unit is used for receiving the real-time parameter data transmitted by the monitoring unit, comparing a real-time water quality parameter with a preset threshold value, and generating a regulation and control instruction through the process parameter matching model in combination with a process operation parameter so as to realize closed-loop feedback regulation and control; the auxiliary unit comprises a sewage inlet pipeline, a treatment tank body, a water outlet pipeline and a medicament storage assembly; through multi-unit collaborative design and intelligent technology integration, efficient, intelligent and safe operation of oilfield sewage treatment is realized.

A method for preparing oily sludge-based inorganic eco-stone includes the following steps: S1: Mixing oily sludge and water until homogeneous, allowing natural sedimentation to separate the oil phase from the liquid and solid phases, and collecting the mixed slurry of liquid and solid oily sludge; S2: Adding a demulsifier to the mixed slurry, mixing and stirring, allowing natural sedimentation, and collecting the solid slurry; S3: Mixing the solid slurry, silicate cement, curing compound, and aggregate until homogeneous to obtain the raw material slurry of oily sludge-based inorganic eco-stone; S4: Pressing the raw material slurry into shape, curing, and preparing the oily sludge-based inorganic eco-stone. The advantages are: the oily sludge-based inorganic eco-stone has excellent mechanical properties and low water absorption, making it suitable for road construction, landscaping projects, and outdoor landscape design, with a wide range of applications.

The invention discloses a demulsifier based on enzyme-nano composite microspheres as well as a preparation method and a cascade application method thereof, and belongs to the technical field of sewage treatment. The invention aims to solve the technical problems that the existing demulsifier is poor in sewage degradation effect, poor in free enzyme stability, easy to inactivate and the like. According to the key point of the technical scheme, the demulsifier based on the enzyme-nano composite microspheres comprises the following components in percentage by dry weight of the composite microspheres: 30-60% of a polymer matrix, 10-40% of an enzyme preparation and 15-50% of a nano silicon-based material.

The invention discloses a hydrophobic monomer copolymer oil-displacing agent with a demulsification function and a preparation method, and relates to the technical field of oilfield chemistry. The preparation method comprises the following steps: stirring a linear block polyether demulsifier and sodium hydroxide for reaction under a high-temperature condition; the preparation method comprises the following steps: preparing a linear block polyether demulsifier, stirring the linear block polyether demulsifier with p-chloromethyl styrene which is equal to the linear block polyether demulsifier in mole to react to obtain a hydrophobic monomer A with a demulsification function, dissolving the hydrophobic monomer A, acrylamide, potassium persulfate and VA-044 in a deionized water solution to obtain a reaction solution, introducing nitrogen to remove oxygen, adding sodium hydrogen sulfite, and carrying out adiabatic reaction until the temperature of the system is not increased any more; and crushing a polymer rubber block obtained after the reaction is completed, hydrolyzing in a sodium hydroxide solution, drying, and crushing. The oil-displacing agent contains a block polyether demulsifier structural unit, has better temperature resistance compared with linear high-molecular-weight hydrolyzed polyacrylamide and common hydrophobic modified polyacrylamide, and has no negative influence on demulsification and dehydration of crude oil emulsion.

The utility model belongs to the field of crude oil demulsifier production, and particularly relates to a crude oil demulsifier production device which comprises a reaction kettle, a stirring shaft is arranged in the reaction kettle, stirring blades are fixedly connected to the stirring shaft, a reciprocating stirring mechanism is arranged at the joint of the reaction kettle and the stirring shaft, and the stirring blades are fixedly connected to the stirring shaft. A self-adjusting mechanism is arranged in the stirring shaft; the reciprocating stirring mechanism comprises a water pump; the water pump is fixedly mounted at the bottom of the reaction kettle; by arranging the reciprocating stirring mechanism, a mixed solution at the bottom of the reaction kettle can be pumped to the top during stirring, so that the mixed solution at the top descends to the bottom, vertical movement of the mixed solution is realized, a better stirring effect is achieved, and meanwhile, the mixed solution can be used as a driving force when the stirring shaft and the stirring blades rotate; the purpose of automatic stirring is achieved, and the problem of poor mixing effect in the prior art is solved.

The application belongs to the field of petrochemical industry, and particularly relates to an amino-modified polymer, a preparation method and application, more particularly to an amino-modified polymer as a surfactant for use as a crude oil demulsifier in crude oil dehydration. The amino-modified polymer with a snowman-like molecular structure is prepared by seed emulsion polymerization and post-modification, and is composed of a hydrophilic silicon-containing inorganic "head" and an oil-wet amino-modified organic group "body". The average particle size of the amino-modified polymer is 1-2 microns. When the amino-modified polymer is used as a crude oil demulsifier, the dehydration rate of crude oil can reach 80-97% within 90 minutes at 60 DEG C.

The application relates to an oil-displacing demulsifier and a preparation method thereof. First, magnetic carbon nanotubes are prepared by depositing ferric chloride hexahydrate and copper sulfate pentahydrate on the surface of carbon nanotubes; second, hyperbranched polymers with terminal double bonds are prepared; then, the two are mixed to obtain hyperbranched grafted magnetic carbon nanotubes; finally, allyl polyoxyethylene ether is continuously polymerized in situ to obtain the oil-displacing demulsifier. The oil-displacing demulsifier prepared by the application is suitable for oil-displacing demulsification treatment of coking wastewater in the early stage. The coking wastewater is complex in composition, contains little oil, but contains a lot of organic components. The polyether with multiple branched chains can form a net trapping effect in the water body, so that oil and water can be quickly gathered and separated in an emulsified state, and the oil removal rate can reach more than 97%. Meanwhile, the demulsifier has magnetism, can be recycled through magnetic separation, and the oil removal rate can still reach more than 92% after ten cycles of demulsification. The oil removal effect is good with a small amount of addition, and the coking wastewater treatment process is simplified.

The utility model provides a kind of demulsifier detection equipment, including support frame, support frame is fixed with collection box and first motor, the rotating shaft of first motor is fixed with two-way screw rod, the top of collection box is equipped with fixed ring, the inside of fixed ring is rotatably connected with the reaction dish of top and bottom open, reaction dish is fixed with the partition that reaction dish inside is divided into upper and lower two storage spaces, support frame is equipped with second motor for driving fixed ring rotation to make reaction dish top and bottom exchange position, fixed ring is equipped with third motor for driving reaction dish rotation.The utility model can quickly detect demulsifier sample by the exchange of reaction dish top and bottom, and automatically clean the storage space after the use of reaction dish, without staff to take down reaction dish manually clean the inside of reaction dish, reduce the labor burden of staff, and improve the efficiency of demulsifier quality detection.

A variety of methods, compositions, apparatuses, and systems are disclosed, including, in one embodiment, a technique of hydraulic fracturing involving providing a fracturing fluid having capsules containing a demulsifier through a wellbore into a subterranean formation and hydraulically fracturing the subterranean formation with the fracturing fluid, wherein the fracturing fluid forms an emulsion in the subterranean formation. The technique includes releasing the demulsifier from the capsules in the subterranean formation, breaking the emulsion in the subterranean formation with the demulsifier released by the capsules, and flowing the fracturing fluid as flowback from the subterranean formation through the wellbore to surface after and / or during the breaking of the emulsion.

The invention discloses a multi-effect demulsification treatment method and system for cold rolling oily wastewater, firstly, a multi-effect demulsification process of'acidification demulsification-neutralization flocculation 'is innovatively adopted, not only is acid-containing wastewater of a cold rolling pickling section or an acid regeneration section used as an acidic demulsifier to realize'treatment of waste by waste' and cost reduction, but also the treatment of waste by waste is realized through subsequent neutralization, aeration and flocculation, so that the treatment efficiency is improved. The demulsification efficiency is obviously improved. In addition, a grading air flotation strategy of cavitation air flotation and pressurized dissolved air flotation is adopted, so that thorough separation and excellent effluent quality are ensured. The cold rolling oily wastewater with different concentrations and compositions can be efficiently treated by accurately controlling key parameters such as pH, iron ion concentration and medicament adding amount. Finally, through the multi-effect synergistic effect, efficient demulsification and oil-water separation of different types of cold rolling oil-containing wastewater are achieved, the treatment efficiency is improved, the operation cost is reduced, stable effluent quality is ensured, and the oil removal rate of the cold rolling oil-containing wastewater can reach 92-99%.